Finding the Fourth Proportional to 53,109.70, 73,291.59 and 30,449.18

Step by Step Solution

1. Step 1: Write the proportion equation
   53,109.70 : 73,291.59 = 30,449.18 : x
2. Step 2: Convert to fraction form
   53,109.70/73,291.59 = 30,449.18/x
3. Step 3: Cross multiply
   53,109.70x = 73,291.59 × 30,449.18
4. Step 4: Simplify right side
   53,109.70x = 2,231,668,999.63
5. Step 5: Solve for x
   x = 2,231,668,999.63/53,109.70
6. Step 6: Final answer
   x = 42,019.99